Dyfyniad APA

CROCKETT, J. U. Perennials: The time-life encyclopedia of gardening. Time-life Books Alexandria.

Dyfyniad Arddull Chicago

CROCKETT, James Underwood. Perennials: The Time-life Encyclopedia of Gardening. Time-life Books Alexandria.

Dyfyniad MLA

CROCKETT, James Underwood. Perennials: The Time-life Encyclopedia of Gardening. Time-life Books Alexandria.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.